Sika Boom 120 Low Expansion

Sika Boom 120 Low Expansion is a one-component, controlled-expansion polyurethane foam that cures with atmospheric moisture. It offers easy and precise application with low consumption and is especially suitable for small-width joints. It provides excellent fixing strength and high stability, making it ideal for fastening, filling, and insulation tasks.

For fixing, stabilizing, insulating, and bonding wooden stair steps, window sills, etc.
For filling connection joints around window and door frames, air-conditioning units, roller shutter housings, etc.
For sound insulation and thermal insulation For filling and sealing gaps, joints, and cavities.
For filling wall penetrations.
For insulating electrical outlets and water pipes.

Easy and precise extrusion – low consumption.
Especially suitable for small-width joints.
Excellent fixing strength and stability.
Excellent adhesion, filling capacity, high thermal performance, and sound insulation.
Maintains its elasticity.
Fast curing.
Unaffected by mold, waterproof, and paintable.
Good resistance to vibrations; returns to its original shape after compression.
Very limited secondary expansion.
Adheres to all construction materials, such as wood, concrete, metals, aluminum, concrete, bricks.